My native language is English. I assume yours is not since you don't seen to understand what I am asking.

Do you know the snakes weight? He should be eating 10-15% of his body weight. If he is 8 months old then he should be eating small rats, not small mice.

Are the hides half log hides? If so, they do not provide enough security for the snake. He needs small rock cave like hides with a small opening. He should fit snugly on all sides (including the top).

Your temps should not fluctuate. It should be 92-94* on the hotspot at all times. Any more than 95*F could burn or COOK your snake. Ambient air temps should be more than 75*F but not more than 85*F. You should be measuring temps with a digital thermometer with a probe. Stick on or gague thermometers are horribly inaccurate.

Spraying for bugs could have caused some neurological damage.

You really should get a UTH. Lamps, as you may have noticed, tend to kill humidity and cause bad sheds. A UTH must be used with a thermostat. This is a device that directly controls how hot the UTH gets.